not to discount your info or experience C, but shadow rock is probably one of the most popular spots on the river and gets pounded day in, day out..I have caught fish there but rarely fish it..
For the true holdover and wild fish, I'd suggest the section along river road ski jumps to 86 bridge. Generally I kayak that section and fish the hard to reach from road side areas.. While it's slow moving water, it does have deep holes at the bends and that's where the lunkers lye ..
FYI : it's also a keep and kill section if you so choose but it's really the only area that don't get winter kill from anchor ice and my burial spot ;)
Good luck, have fun and hope you post some trouty pic's..
Sorry for the hijack db but now I'm excited about the ADK's gain